Paper making machine



Oct. 10, 1933. w H wLLsPAUGH 1,930,104

7 PAPER MAKING MACHINE Filed Feb. 16, 1931 QQQLJLJIJ ()0 ZO m wENTQR 6 ATTORNEY Patented 0a. 10, 1933 PAPER MAKING MACHINE William H. Millspaugh, Sandusky, Ohio Application February 16,

10 Claims.

The invention hereinafter to be described relates to paper making machines and more particularly to machines of the general type known as Fourdriniers.

One of the great difficulties of. all regular Fourdriniers is the transfer of the paper web from the making wire to the first press and from the first press to the second press. At those points there is a considerable gap across which the newly formed damp web passes without other support than its own inherent strength. All kinds, weights, strengths and qualities of paper are made on these machines at all possible speeds ranging from a few feet a minute to eleven hundred or more feet per minute. There are frequently breaks at the points mentioned and at every such break operation of the machine is stopped until the broke (broken paper) is cleared and production restarted. The costliness of such stoppages is too well known to repeat here.

The main objects of the present invention are to provide an arrangement and construction wherein the making wire and the two presses will be so made, positioned and disposed relatively to one another and will so cooperate with each other that all breaks at the points mentioned will be completely eliminated, with an obvious very great increase in the production of the machine.

In orderto more clearly disclose the constructions, operations and use of the invention reference should be had to drawing forming a part of the present application.

The single figure of the drawing is a diagrammatic side elevation of one species of machine of a preferred type, with the invention embodied therein.

While a regular standard Fourdrinier has been illustrated as an example, it is to be clearly understood that any type machine in which a sheet is continuously formed and passed on to a press or presses is intended to be included within the field and scope of the application of the invention; except only such cases as it is impracticable to apply the idea to.

Referring to the drawing in detail 1 indicates a making wire which, at the couch end, instead of going directly back on the return run, at the couch 2, is continued on'in the same. direction a considerable distance to pass about a turning roll 4 and return as its lower run. Contacting with this portion 3 is a press felt 4 which passes around the lower roll 5 of a three roll press. This lower roll is a suction press and transfer roll 1931. Serial No. 516,005

having two nearly oppositely disposed suction boxes 6 and 7. The suction box. 6, by its vacuum, acts through felt 4 upon the web or wire 1 to transfer the web to the felt and hold it there, while the suction in box 7 assists in withdrawing (39 water from the web and felt as they pass together between the lower roll 5 and second roll 8. Roll 8 is the second or middle member of the three roll press and is also provided with two suction boxes 9 and 10. The box 9, by its 55 vacuum acts through the second press felt 11 on the web which is carried on the first felt, transferring the web from the first'to the second felt. The box 10, by its vacuum acts through the felt 11 on the web to withdraw more moisture from the felt and web. As the web and felt continue they pass through the bite of rolls 8 and 12, the roll 12 being the top'rollwhich is a plain press roll without suction. It will be noticed that the felt 11 declines sharply from the horizontal as it leaves the bite between rolls 8 and 12. The paper is taken off horizontally as indicated at 100.

It will be noticed that the suction boxes 6 and 9 are in the lower sides of their respective rolls 30 l and that any vacuum exerted will exercise a lifting action, upwardly toward the center of the respective roll. This is a transferring action in each instance. And, to that end the box 6 is so placed as to continue its action in the di 35 rection of travel of the web to a point beyond that at which felt and wire 3 contact. The same is true as to box 9 and the contact point of felt 4' and 11. The obvious result is that each transfer suction box lifts the sheet or web from its preceding carrier as the two carriers begin to separate and holds it on the receiving carrier long enough for it to become set or attached thereto, so that it will continue on and with the'succeeding or receiving carrier.

It will also be noticed that the suction boxes 7 and 10 are so placed as to operate through an are leading to the bite of the rolls from the approach side. They are, therefore, in position to receive and draw off the puddle of water which would otherwise accumulate there as it is squeezed or pressed out;

The construction and arrangement herein set forth provide a two press assembly of three rolls stacked one above the other, the two lower rolls each being both a suction press and a suction transfer roll. The sheet or web passes automatically directly from the making wire to and through both first and second presses without the bridging of any gap and without breaks due to gaps between presses and between making wire and first press, completely eliminated.

The number of press rolls is reduced from four to three, all frame members and accessories of one press are eliminated, and the entire press section of the machine is greatly condensed and compacted and requires only a fraction of the space heretofore required.

Many changes may be made in the construction, arrangement, and disposition of the various parts of the invention within the scope of the appended claims without in any way departing from the field and scope of the same and it is meant to include all such within this application wherein only one preferred arrangement has been disclosed merely as an illustration.

Having described my invention, what I claim and desire to protect by Letters Patent is:-

1. In a paper making machine, 2. making wire, a press roll above said wire, a press felt extending above said roll and in contact with said wire, and means within said press roll for transferring a web of paper from said wire to said felt, and a second press roll above and cooperating with the first press roll.

2. In a paper making machine, a making wire, a press roll above said wire, a press felt extending about said roll for transferring a web of paper from said wire to said felt, a second press roll cooperating with the first press roll, a press felt extending about said second press roll and in contact with the first press felt, and means for transferring the web of paper from the first felt to the second felt.

3. In a paper making machine, a making wire, a press section comprising two suction press rolls arranged one above the other and above said wire, a press felt extending about each roll and between the rolls and in contact with each other, and a third roll above and cooperating with the upper of said rolls.

4.. In a paper making machine, a making wire and a press section comprising two suction press suction transfer rolls arranged one above the other and above said wire, a press felt extending about each roll and between the rolls and in contact with each other, and a third. roll above and cooperating with the upper of said rolls.

5. In a paper making machine, a making wire having an extended and downwardly inclined portion and a press section above and cooperating with said extended portion and comprising two suction press rolls arranged one above the other, a press felt extending about each roll and between the rolls and in contact with each other,

said turning roll to provide an enlarged area of contact between said wire and press roll, a press felt extending about said press roll, a second press roll above and cooperating with said press roll, and a press felt extending about said second press roll and in engagement with said first mentioned press felt.

7. In a paper making machine, a making wire, a turning roll mounted beyond the lower couch roll of said machine, said wire extending downwardly from the couch about said turning roll, a press roll above said extended portion engaging and depressing the same between the couch and said turning roll to provide an enlarged area of contact between said wire and press roll, a press felt extending about said press roll, a second press roll above and cooperating with said press roll, a press felt extending about said second press roll and in engagement with said first mentioned press felt, and in engagement with said first mentioned press felt, and a third press roll above and cooperating with said second press roll.

8. In a paper making machine, a making wire extended beyond the couch roll, press rolls arranged one above another and above said extended portion and means within one of said rolls for transferring a web from said wire to such roll.

9. In a paper making machine, a making wire extended beyond the couch roll, press rolls arranged one above another and above said extended portion, means within the lowermost of said rolls for transferring a web from said wire to said lowermost roll and means within the roll next above for transferring the web thereto from the lowermost roll.

10. In a paper making machine, a making wire extended beyond the couch roll, three press rolls arranged one above the other and above said extended portion, means within the lowermost roll for transferring a web from said wire to said lowermost roll, means within the roll next above for transferring said web thereto from the lowermost roll, and means within said second named roll for preventing transfer of said web from the second named roll to the roll thereabove.

WILLIAM H. MILLSPAUGH. 

